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/*@@
@file GHExtension.c
@date Mon Mar 15 15:48:42 1999
@author Gerd Lanfermann
@desc
Set up the symmetry GH extension. This should really be done
with StoredData
@enddesc
@@*/
#include <stdlib.h>
#include "cctk.h"
#include "Symmetry.h"
void *Symmetry_AllocGHex(tFleshConfig *config, int convlevel, cGH *GH)
{
int gf,grid_dim,NumVars; /* Number of dimensions, grid functions */
SymmetryGHex *newGHex; /* Type of GHextension is EinsteinBoundGHex */
NumVars = CCTK_NumVars(); /* Get number of grid functions */
grid_dim = CCTK_MaxDim(); /* Get maximal dimension of the grid */
/* allocate the GHextension */
newGHex = (SymmetryGHex*)malloc(sizeof(SymmetryGHex));
/* allocation for the number of grid functions*/
newGHex->GFSym = (int **)malloc(NumVars*sizeof(int *));
/* allocation for the number of dimensions*/
for (gf=0;gf<NumVars;gf++)
{
newGHex->GFSym[gf] = (int *)malloc(2*grid_dim*sizeof(int));
}
/* Now we have something, that looks like [0..NumVars-1][0..grid_dim-1]
and we return that: This will be merged into
the GH and can be referenced in the following manner:
int handle = CCTK_GHExtensionHandle("Symmetry");
..... which returns a pointer the GHextension
BoundGHEx = ((pGH *)GH->extensions[handle]);
..... BoundGHex can now be used as:
BoundGHex->GFSym[3][2] = 1 ;
*/
return newGHex;
}
void Symmetry_InitGHex(cGH *GH)
{
SymmetryGHex *newGHex;
int handle;
int gf,d;
int NumVars =CCTK_NumVars();
int grid_dim;
grid_dim = CCTK_MaxDim();
handle = CCTK_GHExtensionHandle("Symmetry");
newGHex = (SymmetryGHex*) GH->extensions[handle];
/* ... and initialize them: */
for (gf=0;gf<NumVars;gf++)
{
for(d=0;d<2*grid_dim;d++)
{
newGHex->GFSym[gf][d] = GFSYM_UNSET; /* not set */
}
}
}
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